RSW'23 MCQ Quiz
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1. All of the following will negatively affect a myocardial study with 201Tl chloride except: 
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2. If a bone  scan has been ordered on a 5-year-old girl, and the physician prescribes 62% of the adult dose to be given, how many mCi should be administered? 

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 3. What is the role of the stannous ion in the preparation of pharmaceuticals labelled with 99mTc?      
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4. The use of elliptical and/or body contour orbits in SPECT imaging should result in improved
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5. What is being evaluated with chromatography testing of technetium radiopharmaceuticals
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6. The use of elliptical and/or body contour orbits in SPECT imaging should result in improved:
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7. Which of the following variables does not affect spatial resolution in nuclear medicine imaging systems?

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8. Full width at half maximum (FWHM) is often used as a measure of:
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9. Uncorrected flood field nonuniformities cause ____________ artifacts in tomographic reconstruction.
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10.  A patient is to undergo a multiple-gated cardiac blood-pool study with the heart cycle divided in 20 frames. The patient is in normal sinus rhythm and has a heart rate of 68 bpm. The computer should lock in at what time per frame for this study?
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11.  At what distance is the exposure rate (in mR/hr) indicated by a package's transport index measured?
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12.  The dose rate during preparation of a radiopharmaceutical is 1.66 mrem/hr. With this rate reduced by 2 HVLs, how many hours would it take a worker to accumulate 10 mrems?
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13.  A well counter is set to collect 10,000 counts or to stop after 5 minutes. The counter stops at 2 minutes. What is the count rate (in cpm)?
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14.  Which of the following quality control tests should be performed on a dose calibrator after a power outage?
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15.  The limit for Mo-99 contamination in a solution of Tc-99m is no more than
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16.  According to national standards, how often should the activity linearity of a dose calibrator be measured?
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17. Which of the following situations would be considered an absolute contraindication for performing adenosine pharmacological stress testing?
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18.   Which instrument is used for counting single pulses from the amplifier that fall within a selected voltage range? 
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19. Which of the following collimators would provide the best resolution through magnification?
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20.  Uniformity of a gamma camera may be measured as either intrinsic or extrinsic
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21.  Which of the following is not a multi hole collimator? 
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22. A circular cold spot artifact in a gamma camera image could NOT be the result of
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23.  Which of the following statements regarding radioiodine and the fetal thyroid are true?
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24.  Advantages of PET over conventional gamma camera imaging include
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25.  PET imaging systems
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26.  All of the following statements are true about silicon Photodiode, except
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27.  As the distance between parallel hole collimator and object being imaged reduces
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28.  Which of the following radioisotope is not suitable for counting in liquid scintillation counters ?
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29. A superscan is a result of:
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30.  Cerenkov counting system is used for
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31. Dose calibrator is based on principles of
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32.  What is the maximum permissible amount of Mo-99 per mCi (per 37 MBq) of Tc-99m at the time of injection ?
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33.   If a preparation of 99mTc mertiatide has 60 mCi of activity present at 8:30 a.m., how many mCi will be present at 9:00 a.m.? (l = 0.944) 
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34.  What is the maximum amount of aluminum ions (Al3+ ) allowed in one milliliter of 99mTc eluate according to the USP? 
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35.  If a kit contains 140 mCi of 99mTc in 23 ml at 9:00 a.m., how much volume must be withdrawn to obtain a dose of 5 mCi at 3:00 p.m.? 
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36.  Which of the following can be said regarding effective half-life?
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37.  If the recommended volume for a MAG3 kit ranges from 4–10 ml, and the 99mTc eluate that will be used contains 820 mCi in 10 ml, and 41 mCi will be used, what is the minimum amount of diluent that should be added? 
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38.   Convert 23 mCi to SI units. 
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39.  A dose of 99mTc DMSA is prepared and calibrated to contain 5.0 mCi at 8:00 a.m. The patient arrives late at 10:00 a.m. Without using any tables of decay factors, determine what activity will remain in the dose at that time. 
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40.  If a radiopharmaceutical is spilled on the floor, the first priority is to: 
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41.  A technologist discovers that a patient in the room next to a radioiodine therapy will receive 2.5 mrem/hr when lying in his bed which is against the shared wall. What should be done? 
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42.  In the event of a spill of 99mTc to clothes, one should immediately:    
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43.  Gaseous radiopharmaceuticals may only be used in rooms that:
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44.  Which of the following must be done during disposal of a carton in which a shipment of 131I was received? 
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45.  What length of time should a lactating female who undergoes 18FDG-PET scanning wait before resuming breast feeding?
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46.  What is the best choice for disposal of a vial containing 27 mCi of 99mTc in 2 ml of liquid?
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47.  If a technologist sits two feet away from a generator and the dose rate at his chair is 15 mrem/hr, what will the dose rate be if he moves his chair 4 feet from the generator?
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48.  A technologist is working in a hot lab where the exposure rate is 20 mR/hr. What sign should be on the door?
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49.  If the lead HVL for 99mTc is 2.6 mm, and a lead shield containing 99mTc eluate is 13 mm thick, what will the exposure rate be from the shielded vial if the unshielded vial had a rate of 100 mR/hr?
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50.  Tools for measuring personal exposure to radiation include all of the following except:
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51.  Which of the following steps would not decrease a technologist’s chances of internal exposure to radiation?
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52.  A Type A package bears a Class II Yellow Radioactive label, has a transport index of 0.8, and contains 10 mCi of 111In oxine. What is the exposure rate at 3 feet from the package?
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53.  What is the dose rate limit at the surface of a package bearing a Class I White label?
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54.  A room containing a 57Co sheet source is posted with a sign reading “Caution-Radioactive Materials”. The exposure rate measured next to the source is 5.2 mR/hr. What should be done?
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55.  If the exposure rate at 10 meters from a radioactive source is 15 mR/hr, what will the exposure rate be at 25 meters?
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56.  All of the following are critical factors in keeping radiation exposure to a minimum except:
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57.  The philosophy of the ALARA program is to keep the radiation dose:
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58.  Which of the following units gives a measure of absorbed doses?
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59.  If the exposure rate at 4 meters from a radioactive source is 5 mR/hr, what will the exposure rate be at 3 meters?
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60.  What is the dose rate limit at the package surface for a shipment of radioactive material bearing a Yellow-III label?
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61.  Which of the following is the most effective means of measuring low levels of removable radiation?
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62.  Which of the following should be used when administering an intravenous pharmaceutical to a patient?
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63.  Which of the following isotopes would be effectively shielded by a plastic syringe?
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64.  What is the best way to decrease the radioactive dose to visitors if a patient is surveyed to emit 3 mR/hr at bedside?
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65.  If two photons strike a sodium iodide crystal at the same time, what will occur?
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66.  A typical energy spectrum of 99mTc from a patient contains a broad peak around 90–140 keV that is not present on the energy spectrum from a point source of the same isotope. This represents:
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67.  Why might a technologist use an asymmetric window around a photopeak?
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68.  What energies are included if a 20% symmetric window is used for the 364 keV photopeak of 131I?
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69.  The _________method of SPECT acquisition requires slightly more time, but has less blurring than the________ method
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70.  Survey meters must be calibrated:
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